dumbbell, dunce

PINHEAD
WordClue
DOOFUSpinhead, dumbbell
FATHEADdunce, lout
DUMBBELLpinhead, dunce
BLOCKHEADdunce, dolt
LAMEBRAINdunce, blockhead
AIRHEADdumb blonde
STUPIDITYdumbness